CVE-2026-41100

{"id": "CVE-2026-41100", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "LOCAL", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.5, "exploitabilityScore": 1.8}]}, "published": "2026-05-12T18:17:21.507", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-284"}]}, {"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-Other"}]}], "descriptions": [{"lang": "en", "value": "Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally."}], "lastModified": "2026-05-16T01:49:18.270", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:365_copilot:*:*:*:*:*:android:*:*", "vulnerable": true, "matchCriteriaId": "71B289C6-6C8F-4217-AA2A-06931EE86372", "versionEndExcluding": "16.0.19822.20190"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}